<template>
  <div class="upload-container">
    <el-button :style="{background:color,borderColor:color}" icon="el-icon-upload" size="mini" type="primary"
               @click=" dialogVisible=true">上传图片
    </el-button>
    <el-dialog :visible.sync="dialogVisible">
      <el-upload class="editor-slide-upload" :action="uploadAction" :multiple="true" :file-list="fileList"
                 :show-file-list="true" name="userfile" list-type="picture-card" :on-remove="handleRemove"
                 :on-success="handleSuccess" :before-upload="beforeUpload">
        <el-button size="small" type="primary">点击上传</el-button>
      </el-upload>
      <el-button @click="dialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="handleSubmit">确 定</el-button>
    </el-dialog>
  </div>
</template>

<script>
  // import { getToken } from 'api/qiniu'

  export default {
    name: 'EditorSlideUpload',
    props: {
      color: {
        type: String,
        default: '#1890ff'
      }
    },
    data() {
      return {
        uploadAction: process.env.BASE_API + "file.upload",
        dialogVisible: false,
        listObj: {},
        fileList: [],
        timeout: 200
      }
    },
    methods: {
      checkAllSuccess() {
        return Object.keys(this.listObj).every(item => this.listObj[item].hasSuccess)
      },
      handleSubmit() {
        const arr = Object.keys(this.listObj).map(v => this.listObj[v])
        if (!this.checkAllSuccess()) {
          this.$message('请等待所有图片上传成功 或 出现了网络问题，请刷新页面重新上传！')
          return
        }
        this.$emit('successCBK', arr)
        this.listObj = {}
        this.fileList = []
        this.dialogVisible = false
        this.timeout = 200;
      },
      handleSuccess(response, file) {
        const uid = file.uid
        console.log(uid);
        /*const objKeyArr = Object.keys(this.listObj)
        for (let i = 0; i < objKeyArr.length; i++) {
          if (this.listObj[objKeyArr[i]].uid === uid) {
            this.listObj[objKeyArr[i]].url = response.data
            this.listObj[objKeyArr[i]].hasSuccess = true
            return
          }
        }*/
        this.listObj[uid].url = response.data
        this.listObj[uid].hasSuccess = true
        console.log(this.listObj);
      },
      handleRemove(file) {
        const uid = file.uid
        delete this.listObj[uid]
        /*const objKeyArr = Object.keys(this.listObj)
        for (let i = 0, len = objKeyArr.length; i < len; i++) {
          if (this.listObj[objKeyArr[i]].uid === uid) {
            delete this.listObj[objKeyArr[i]]
            return
          }
        }*/
      },
      beforeUpload(file) {
        console.log(file);
        var testmsg=file.name.substring(file.name.lastIndexOf('.')+1)                 
        const extension = testmsg === 'jpg'  
        const extension2 = testmsg === 'png'
        const extension3 = testmsg === 'gif'  
        const isLt2M = file.size / 1024 / 1024 < 1  
        if(!extension && !extension2 && !extension3) {  
            this.$message({  
                message: '上传文件只能是 jpg、png、gif格式!',  
                type: 'warning'  
            });  
            return false;
        }  
        if(!isLt2M) {  
            this.$message({  
                message: '上传文件大小不能超过 1MB!',  
                type: 'warning'  
            });  
            return false;
        }
        if (!isLt2M) {
          this.$message({
            message: '上传文件大小不能超过 1MB!',
            type: 'warning'
          });
          return false;
        }
        const _self = this
        const _URL = window.URL || window.webkitURL
        const fileName = file.uid
        this.listObj[fileName] = {}
        return new Promise((resolve, reject) => {
          const img = new Image()
          img.src = _URL.createObjectURL(file)
          img.onload = function () {
            _self.listObj[fileName] = {hasSuccess: false, uid: file.uid, width: this.width, height: this.height}
          }
          this.timeout += 200;
          setTimeout(() => {
            resolve(true)
          }, this.timeout);
        })
      }
    },
    mounted() {
      this.timeout = 200;
    }
  }
</script>

<style rel="stylesheet/scss" lang="scss" scoped>
  .editor-slide-upload {
    margin-bottom: 20px;
    /deep/ .el-upload--picture-card {
      width: 100%;
    }
  }
</style>
